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In a 14/12/2021 webinar, NAVISP industry shows how to help scientists take a Black Hole sharp image. Register for the Final Presentation of the Precise Relative Positioning in MEO to support Science Missions project!

Last Updated: 25/11/2021 15:03     Created at: 25/11/2021 15:03

Critical technologies required to achieve precise relative positioning in Medium Earth Orbit, developed in the NAVISP context, can support scientists to advance on their understanding of physical cosmology. As a use case, the challenging scenario of getting a sharp image of the event horizon of a black hole, is considered to explore the limits of relative positioning in MEO.

This use case consists of a constellation of 2 (or 3) non-cooperative coplanar MEO satellites with a small offset in altitude. In this activity, the company GMV-NSL has devised a positioning system that can determine the relative position vector between the MEO satellites to within 3 cm on-the-fly and 7 mm in post-processing in each of the 3 relative coordinates x, y and z, and which can achieve a relative time synchronisation t compatible with the relative position accuracy. The relative position vector is defined by the reference centres of the observation sensors, assumed the main payload aboard each of the MEO satellites. Because of the stringent time-positioning requirement, and the operation of the system within the Earth gravitational potential, both special and general relativity effects have been taken into consideration from the very start.

GMV-NSL will provide the true and estimated trajectories from the present study to a team of scientists at the Radboud Universiteit Nijmegen, as input to their event horizon imager simulator. In this way the suitability of the achieved precision in the relative positioning vector to produce a high-quality image of the event horizon of a black hole will be assessed.

Please find the Agenda of the Final Presentation here, and the registration link here.